<template>
  <div>
    <router-view />
    <el-button type="danger">危险按钮</el-button>
    <el-transfer
      filterable
      :filter-method="filterMethod"
      filter-placeholder="请输入城市拼音"
      v-model="value"
      :data="data"
    >
    </el-transfer>
  </div>
</template>

<script>
export default {
  data () {
    const generateData = _ => {
      const data = []
      const cities = ['上海', '北京', '广州', '深圳', '南京', '西安', '成都']
      const pinyin = [
        'shanghai',
        'beijing',
        'guangzhou',
        'shenzhen',
        'nanjing',
        'xian',
        'chengdu'
      ]
      cities.forEach((city, index) => {
        data.push({
          label: city,
          key: index,
          pinyin: pinyin[index]
        })
      })
      return data
    }
    return {
      data: generateData(),
      value: [],
      filterMethod (query, item) {
        return item.pinyin.indexOf(query) > -1
      }
    }
  }
}
</script>

<style></style>
